Abstract
Objective Wassel type Ⅳ-4 thumb duplication is difficult to treat because of the severe deformity,This report is on the modified Bilhaut procedure-soft tissue merged surgery for this type of deformity.Methods From August 2005 to January 2011,21 cases with Wassel type Ⅳ-4 thumb duplication,of which there were 13 males(61.9％)and 8 females(38.1％),with an average age of 1.2 years underwent modified Bilhaut procedure(soft tissue merged surgery,excising the radial thumb and reconstruct the ulnar thumb.Including tendon transfers,ligament reconstruction,joint capsule repair,forming flaps,soft tissue merge).Results 19 cases were followed up for an average of 25 months.A modified Tada scoring system was used to evaluate the results of the treatment.These were excellent in 10 cases(52.6％),good in 7cases(36.8％),fair in 2 cases(10.5％).Conclusions Our technique can provide a satisfactory thumb appearance,and functionality of thumb with Wassel type Ⅳ-4 thumb duplication. Key words: Thumb,abnormalities; Surgical procedures,operative
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